Engine 6.1 | Labview Runtime

: Provides the core libraries and engine required to run stand-alone applications built with the LabVIEW 6.1 Application Builder Web Integration

Today, finding this version can be tricky as it is often moved to National Instruments' archives : You may still find it on the NI Support site labview runtime engine 6.1

While not "officially supported," older RTEs are known to "mostly run" on later Windows versions if installed correctly. LabVIEW 6.1 is a : Provides the core libraries and engine required

Here is the harsh reality: